非晶态Mg-Ni-Pr储氢合金的差压铸造及电化学性能

彭浩; 李双寿; 黄天佑; 汤彬

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非晶态Mg-Ni-Pr储氢合金的差压铸造及电化学性能
Electrochemical Performance of Differential Pressure Casting Mg-Ni-Pr Based Amorphous Hydrogen Alloy
2009年29卷第5期页码：436-438
纸质出版日期： 2009 ，
DOI：

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[1]彭浩,李双寿,黄天佑,汤彬.非晶态Mg-Ni-Pr储氢合金的差压铸造及电化学性能[J].特种铸造及有色合金,2009,29(05):436-438+388.

Peng Hao1, Li Shuangshou1, Huang Tianyou2, et al. Electrochemical Performance of Differential Pressure Casting Mg-Ni-Pr Based Amorphous Hydrogen Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(5):436-438.
[1]彭浩,李双寿,黄天佑,汤彬.非晶态Mg-Ni-Pr储氢合金的差压铸造及电化学性能[J].特种铸造及有色合金,2009,29(05):436-438+388. DOI：

Peng Hao1, Li Shuangshou1, Huang Tianyou2, et al. Electrochemical Performance of Differential Pressure Casting Mg-Ni-Pr Based Amorphous Hydrogen Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(5):436-438. DOI：

摘要

研究了非晶态Mg-Ni-Pr储氢合金的差压铸造和电化学性能。结果表明

差压铸造能显著提高合金的非晶形成能力

Mg65Ni21Pr14的非晶临界尺寸由普通铜模喷铸法的3mm提高到4mm。非晶态合金Mg65Ni21Pr14在573K时的吸放氢量（质量分数）分别为3.62%和3.48%;最大放电容量为342.6mA.h.g-1

20次循环后为302.2mA.h.g-1

是最大放电容量的88.2%

循环稳定性高于其他非晶态Mg-Ni系储氢合金。

Abstract

Electrochemical performance of differential pressure casting Mg-Ni-Pr amorphous storage hydrogen alloy was investigated.The results indicate that differential pressure casting can significantly improve the glass formation ability

and critical size of amorphous Mg65Ni21Pr14 alloy is increased from 3 mm in conventional copper mold spraying to 4 mm in differential pressure casting.The maximum hydrogen absorption capacity and effective hydrogen absorption capacity of the amorphous alloy reach 3.62% and 3.48%（weight percentage）

respectively

at 573K.The highest electrochemical capacity makes about 342.6 mA·h·g-1

and it is 302.2 mA·h·g-1 after 20 cycles

88.2% of the maximum electrochemical capacity

so the cycle stability is higher than other Mg-Ni-Pr based amorphous hydrogen storage alloys.